Scaffold.



S. PICH-LBR.

SGAFFOLD.

APPLICATION rum) 001217, 1912.

Patented Sept; 23,1913.

a SHEETS-SHEET}.

- S. PIGHLER.

SOAFFOLD.

APPLICATION FILED OUT. 17,1912.

Pai ented Sept. 23

2 SHEETS-SHEET Z.

. Be it known that I, S'lEPI-IAN PICHLER,' a I UNITED STATES PATENT orFroE.

. summit menus, or m ooxmrm nus-w You,

'scnrom).

. Specification of Letters Istent. Patented Sept, 23,3913.

Application as October 17, 1912. 'Serialflo. 726,192.

To all whom it may concern citizen of the United States, residing at Brooklyn, county of Kings, and State of New York, have invented a new and Improved Scaifold, of which the following is a specification.

. 'This invention relates to a scaffold of novel construction, which may be quickly set up, is readily adjustable and separable,

and possesses superior-strength and rigidity.

In the accompanying drawing: Figure 1 iso side view of a scaitold embodying my invention; Fig.2 an end view thereof; Fig. 3 an end view of'one of the scaffold sect-ions; Fig. 4 a side View of parts of thetwo scafi'old sections showing them placed side by side; Fig. 5 a detail of part of the scaffold showing the base frame raised; Fig. 6

a perspective view of the connection-between base frame and upright; Fig. 7 an en-' larged section on line 77, Fig. 1; Fig. 8

a section .on line S8, Fig. 7; Fig. 9 a de-.

tail of the brace-couplings;-Fig. 10 a detail of'the platform support; Fig. 11a perspec- -'tive view of a running board bracket, and

- Fig li a top View thereof pests in sect on.

tirelyseparated.

with one of the The scaifold comprises two or more units of substantially equal construction which may be raised one above another or be on- Each unit or section 1s provided with a base composed 'of a pair oflongitudin'albeams 1:3 resting with their ends upon the ends of a' p'air of cross beams -14, which are supported on casters 14".

Beams 13am connected to beams 14 b'ybelts 15,,so'as to constitute an openframe. At" each. end, beams '13 are 'ap'erturedabore beams 14 as at "1.6 for the reception of a yoke ,"17, into whichthe lower-end of an upright I rest upon beam 14.

16, beams -13,are provided with 'an addi-.

' tional perforation 19, which is clear of beam corner post 18 is removably fitted so as to Sidewrse of apertures 14' and is so spaced that the yoke may also be inserted with its shanks into this perfo:

Jrationfand the adjoining perforation 16.

Thus by manipulating "the i yoke-holding n uts20 and shi ting the yoke sidewrse, the post- '18 may be set to clear beam 14. and in this way the base frame may be'slid upward along the posts, which. will-form guides at I the corners of the ,frame. Thetramethus raised may be held at any suitable elevation.

above the floor by tightening up nuts 20;

so that in this way the device is supported solely upon the ends of the corner posts.

This ad ustment is resorted towhen the scaffold is to clear benches 21 or other' floor-fixtures (Fig. The adjoinin posts 18' of the upper and. lower scaffold sections are adapted to be connected by bolts,

:22 engaging corresponding perforationsfii,

a row ot suchperforations being formed in each post, so'that m this wa Y the upper sectien may be supported byt 1e lower section at a suitable elevation above the floor. The

uppermost perforations'23 of posts 18 are engaged by'bolts 24upon which are hinged eyed bails 25. These bails pass through corresponding apertures of. transverse joists 26 upon which'are placed the'planks 527 of the platforms.

To'the two upper corners of the upper scafl'old section, constructed as described,

arepivoted by bolts 28,'a'pair of dia 'onal end braces 29, while to the center of cam 14 of the lower scaffold section, is pivoted at 30, a pair of correspon'dipg'braces 31. Each brace 29 is-ahned with its companion brace 31 which it overlaps and to'wlnch 1t 15 remorably connected by couplings or slides 29, are then swung. inward at their lower ends and connected to aconunon pivot 3-1 at the centeri of the upper beam 1.4, whiletheir upper ends and bolted to the lower posts 18 at the corresponding apertures 23 (Fig' '3). 'scail'old section is properly braced at-its .ends from top to bottom. In addition to the end braces. constructed as descrihedl the the lower braces 31 are swung outward at In this way each segregated device is provided with side braces made in all respects similar to the end braces. Thus there are pivoted .to the upper. corners of the upper scaffold sectionat 35, the side net-ted by slides 37 to the overlapping'endsof braces 38 pivoted at '39 to the center of the lougitmlinal beam 13 ot thc lo'wcr scaffold section. If the two sections are to be separately uscdythc lower ends of the upeommodate' between when! separated placed side by side and so spaced as to ac-' them, a platform 42' per braces 36 are connected to a common pivot 40 at the center of upper beam 13, while the upperends of the lower bracesv38 are pivoted at 41 to the upper ends of the lower uprights 18.,

As shown in Fi 4;,th two scaffold units, from each other may be bolted to uprights 18"at any of the apertures 28. In this way, the length. of the "structure may be increased to any extent de- 'sired,-so'that an extensive Wall surface is accessible to the operator.'

,Means are provided for adjust'ably securing running boards to both sides of the scaffold. These means comprise apertured brackets 4:3, to-which are bolted at 4A, flanged plates 45 that-straddle posts 18 and are adapted ,to beremovably connected thereto by bolts 46 engaging either of the perform tions23. Upon each pair of brackets 43, a

7 running board- 47 is-placed, so as to project fromthe side oft-he structure and thus ins crease its Working s'urface.

I claim: l I

1.- A scaffold comprising a "plurality of corner uprights, platform-sustaining means carried therebyf a' base frame composed ofa pan of ion itudinal beams and a pan of cross beams t at are secured to the ends of l the longitudinal beams,- said-frame being adapted to encompass the uprights and to be slida-ble along the same,' and means for detachably securing the frame to the uprights at an elevation above the lower ends 2. A scafi'old unit comprising a baseframe, a plurality of yokescarried thereby, means for setting said yokes either vertically above or sidevvise of part of said frame, a plurality of uprights encompassed a said yokes and platform-sustaining 1 means carried by said uprights. y

3. A scaffold unit comprising a baseframe, composed of longitudinal and trans verse beams, one setof saidbeams having yoke receiving means above and also side.

Wise ofthe other set of beams,"yokes adapted to engage either of saidmeans, uprights encompassed by said yokes and platform- 

